JPS5948101A - Motor tool with positioning device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to movable parts of power tools, such as tables, cutters,
This relates to Chuck Temple's electric tool with a positioning device.

Conventionally, as a positioning device for a table of an electric tool, for example, a 2+110-Tary encoder or a Parnu generator is used, which works in conjunction with a table-driving ball screw to output an analog or digital signal corresponding to the number of rotations of the ball screw. For example, pulse 9
In the case of a generator, a counter *G is used to count the pulses from the pulse generator, and when the source is turned on, the tape /I/ should be returned to the mechanical original position. It is necessary to reset the counter, and in order to prevent problems such as position detection disappearing due to the counter being cleared when the Sayagi switch is turned off or stopped, it is necessary to reset the shore charge for power backup. In addition to requiring electricity and 92, 1 chitsu 7'-q is incorporated into the attack factory.
In the case of icons, there were drawbacks such as limited memory capacity and slow access times, which limited table movement speed.

The purpose of the present invention is to easily and accurately control the iJ of the dynamic evaporator by simplifying the structure and m, regardless of the on/off state of the power supply.
The object of the present invention is to eliminate the above-mentioned drawbacks of the conventional art by providing a power tool equipped with a positioning device capable of performing Ai/1 site skin enrichment.

/ Next, the configuration of the first embodiment of this light will be explained with reference to FIGS. 1 to 5.

The workpiece 6 on the table 2, which moves up and down via the lifting shaft 1 driven by the motor M1, is fed by the feed roller 4 driven by the motor (not shown). Frame 7 of automatic planer 6 for cutting with 5
VC is a tape) A rotary encoder 8 for determining the moving position of the tape V2 is attached so as to be connected to the table 2 via a hook 9 and a pinion 1o.

Using these 8 rotary encoders, divide the circumference into 10 equal parts, and
Each lane A, D of BCD code of ~9 and BC of 0 to 9
Reading near each boundary line of the D code: A printed circuit board 11 in which a latch lane L for preventing minu and a source supply lane P are formed concentrically on the surface of a disk.
10! A plurality of printed circuit boards 11 are arranged coaxially corresponding to the number of digits of the number, and each printed circuit board 11 is rotated by 1/10 from the pinion 1o through gears 01 to G4, and each lane A-DS' of each printed circuit board 11 is L, PK contact point 1
2A ~l 2D, 17L, 12Po lead w13. −
It is formed in a state where it is pulled out to the outside.

1. Roughly speaking, FIG. 5 shows the electrical circuit shoulder of this embodiment, with SW3
The l1 direction is switched by turning on and off the g4 relay
a reversible motor M1 whose braking DC power source is controlled on and off by turning on and off a switching relay X2;
In addition to being connected to the planer blade 5 drive motor M2, which is controlled by the on/off of the switch SW4, the output from the rotary encoder 8 is displayed in 7 segments via the BCD-7 segment decoder/driver circuit DEV with a latch. The information is input to a display DP having an array of elements, in this case a display fiDP attached to the front E of the automatic planer board 6, and the position of the table 2 detected by the rotary encoder 8 is displayed on the core display DP.

In addition, in FIG. 5, R1 is a resistor, Dl is a diode, and c
1. c2 is a capacitor, w1. w 2 indicates the outside line of the reversible motor M1, and the normally open contacts of each relay x l,
In the eyebrow general point, there are all b cases after the valley relay code.

Next, the operation of this embodiment will be explained.

First, use a pre-specified Tomari-bachi to prepare a planer blade 5tv 1.
4. In the k-knotted state, the rotary encoder 8 outputs a signal corresponding to the dividing dimension between the tape/L/2 and the tip of the planer blade 5.

Therefore, in this state, the operator presses the foot switch SW2.
When the table 2 is moved up and down via the motor M1 by operating S W 3, the portion size is displayed on the display 1gD P via the rotary encoder 8, and as a result, the operator can respond to the portion size. The position of the chi 132 can be easily determined.

FIG. 6 is an electric circuit diagram of a second embodiment of the present invention. In this case, after measuring the protruding needle of the planer blade 5, set it on the Samir switch SW5, and remove the planer from the Samir switch SW5. The output signal corresponding to the protrusion of the blade 5, the feed angle 4 from the rotary encoder 8, and the output number 1n corresponding to the Ill interval of the table 21IIl are input to the attenuation 8 circuit SUB, and the BCD-7 segment with a foot is connected. The movement, operation, and effect are almost the same as in the shooting embodiment, except that the tip of the planer blade 5 and the entire separation dimension of the tape/I/2 are displayed in DPiC via the encoder/driver circuit 13DEV.

Next, the story of the 6th fire example of Mokkomyo will be explained with reference to Fig. 7 and Fig. 8.

In this case, the keyboard or digital switch that sets the table 20 position i # determining position 1 d corresponding to the dividing size or the output from the setting device PS and the rotary encoder 8
Outputs corresponding to the dividing dimensions from , outputs from the safety upper and lower 15j4 limit switches LSI and LS2 that define the upper and lower limits of table 2, and tape) v2
The output from the start switch SW6, which is operated at the start of movement, and the output from the processing switch SW4, which is operated at the time of cutting, are each processed by an MPU (microprocessor).
149 Microsoft stores one song in the RAM in the MPU 14, and outputs from the MPU 14 are sent to each driver circuit DCv1 to DCV3? +1' to control each relay X1~X3i on/off via the tape)
The position of v2 is displayed on the display DP and other aspects are almost the same as (1 cultivation) of each stomach example.

Next, Figure 8 shows the micro illumination for determining the position of table 2.
+lJ l1la is a flowchart, and the positioning operation will be explained according to this flowchart.

When the power switch is turned on, the system first performs an initialize to clear all the devices, then MPtJj
The initial set of RAM ρ in d is stored, and in this state, the operator uses the position setting device PS to set the table 2 position corresponding to the dividing dimension.
When the start switch SW6 is pressed, the output signal S1 corresponding to the table 2 set position from the position detector PS and the output signal S1 corresponding to the tape) v2 current position from the rotary encoder 8 are read. "5l-El
” is calculated by /ifi, and +5l-E11=O”
' Judgment N.

Further, “S j −g j)Q°′ is determined, and when this determination is YES, the motor M1 rotates forward and the tape /L/2 is placed on the upper row, and the +5l−Eu Iiii slows down the motor zM1. For example, when you reach D1 distance,
Monitor M11J fAl In order to change to pitch feed without a liner shaft, “+8l-Elf)DI” is determined, and with this judgment NO, motor M1 is controlled by pitch feed and “l51-E 11=0” At motor M1
stops, and the tape /L/2 is positioned at the position set by the position 11 setting position PS.

Also, in the corner IJ "S 1-E 1>0" judgment ff'o! j! M1 rotates in reverse to lower tape/L/2, and as in the case of forward rotation, motor M1 moves table 2
is positioned at the position set by the position setting device PS and then stopped.

Next, the effects of the present invention will be explained.

The first aspect of the invention relates to a power tool that processes a workpiece by driving a cutter. 1 corresponding to the number of digits in the base number
A plurality of code boards that change two revolutions by /10 revolutions and divide one revolution into 10 equal parts to generate an output signal corresponding to any code from 0 to 9, such as the printed circuit board 11 and the code reader 145! For example, contacts 12A to 12D, 12L, 1
Position detection consisting of 2 P! g For example, the power tool with a positioning device is equipped with a rotary encoder 8 and a display zg that converts the output from the position detection kg into a decimal number and displays it. qJ moving part position 1i7
In addition to being able to easily perform a mechanical return-to-origin operation while maintaining sufficient reproducibility, wL
Even if the source is disconnected, the positioning state is maintained by the IU, and even if the position of the iJ moving part is shifted due to manual operation when the source is extended or disconnected, the position after this movement is displayed on the display when the source is turned on. Moreover, since no counter or memory circuit is required for position detection, the circuit is simple, and there is no need for a backup source when the power source is turned off. This has the effect of being able to easily determine the movable part tl of the power tool while also preventing f!4 operation due to electrical noise and maintaining the downsizing of the power tool.

Next, the second invention relates to a power tool that processes a workpiece by driving a cutter, and a motor-driven brake part of the power tool, such as a table, cutter, chuck, etc., rotates in conjunction with the brake part. A plurality of code plates, such as printed layers, which change the rotation by 1/10 rotation in accordance with the number of decimal digits and divide one rotation into 10 equal parts to generate an output signal ti corresponding to an arbitrary code from 0 to 9. Board 11 and code reading Wit, for example, 12A to 12D, 12L, 1
2 A detector consisting of a rotary encoder 8, a display that displays the output from the hanger in decimal format, and a moving position set for the and a control circuit that stops the JIF moving part drive motor when the outputs of the tIf setter and the 1d gradual ejector match corresponding to the AiJ moving part Ω movement position 1, respectively. In addition to being able to automatically position the aJ411 part using the retained form, it is also possible to read the position detector output without any discrepancy, even if a one-chip microcomputer is used for control. It has the effect of being able to determine the brightness of the moving parts in the animal state.

[Brief explanation of the drawing]

Figure 11 is a positive view of the mechanical plane plate 6 in the disciple embodiment of this defense, Figure @2 is a diagram for that side 1, Figure 6 is an explanatory diagram showing the code of the printed circuit board 11, and Figure 4 is An explanatory diagram showing the gear arrangement 01 to G4, FIG. 5 is an electric circuit diagram thereof, and FIG. 6 is a VFT air circuit diagram of the first embodiment of the present invention.
FIG. 7 is an electric circuit diagram of a sixth embodiment of the present invention, and FIG. 8 is a flowchart of its microcontrol. 1... Lifting axis 2... Cheeple 9...
・Tsutori 10...Pinion 11...Printed circuit board DP...Wings, equipment PS...Position 1d setting k
gDEV-...BCD-7 segment decoder
Data/drive route 14 ・、、MPU
DVCl, DVC2-...Try/<times Kx1. x2
・・・ Rishi - G1~
G4... Gya - Applicant
Makita Co., Ltd.Ki Seisakusho Representative Director
9P Physician Oka 1) Eibuta Figure 1 Figure 2 Figure 3 Figure 5 4v4

Claims (2)

[Claims] (1) For a power tool that processes a workpiece by driving a cutter, hJ@ of the motor drive in the power tool
It rotates in conjunction with the digits of the decimal number, and rotates in 1/10 rotation increments corresponding to the number of digits in the decimal number.
A position detector consisting of a plurality of code plates and a code reader that equally divides and generates an output signal corresponding to any code from 0 to 9, and converts the output from the corresponding code into a decimal number. A pivoting tool with a position-slimming device, characterized in that a display 4 for conversion and display is attached. (2) For power tools that process workpieces by driving a cutter, the I4! , motor-driven iJ moving parts in power tools and l! l! As it rotates, it rotates by 1/10 rotation in accordance with the number of decimal numbers. A position detector consisting of a code board and a code reader that divides 1 concave I into 10 equal parts and generates a high strength 1d number k + jj corresponding to any code from O to 9-, and the position detector a display that converts the output from the decimal number into a decimal number and displays it;
a control circuit that stops the movable part driving motor when outputs from a position setting device for setting the moving device 1a of the J11J1 section and the position lit detector match corresponding to the moving position of the iJ moving part; A power tool with a positioning device, characterized in that each of the following is attached.